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Finding the Fourth Proportional to 287,713,065.20, 431,569,597.80 and 195,880,060.40

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Solution

The fourth proportional to 287,713,065.20, 431,569,597.80 and 195,880,060.40 is: 293,820,090.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,713,065.20 : 431,569,597.80 = 195,880,060.40 : x
  2. Step 2: Convert to fraction form
    287,713,065.20/431,569,597.80 = 195,880,060.40/x
  3. Step 3: Cross multiply
    287,713,065.20x = 431,569,597.80 × 195,880,060.40
  4. Step 4: Simplify right side
    287,713,065.20x = 84,535,878,883,867,712
  5. Step 5: Solve for x
    x = 84,535,878,883,867,712/287,713,065.20
  6. Step 6: Final answer
    x = 293,820,090.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.